Fullerton house fire under investigation

January 21, 2011 12:40:54 AM PST

FULLERTON, Calif. --

The cause of a house fire in Fullerton early Friday morning was under investigation, authorities said.The blaze broke out on the 100 block of Ash Street at about 1 a.m. Firefighters arrived to find a house near Harbor Boulevard fully involved.

They made quick work of the blaze. A division chief said it was extinguished in about 15 minutes.

Firefighters didn't find anyone inside the home, and no firefighters were hurt.